RT @OrbitalATK: The sun is starting to rise over the @NASA_SLS booster. Less than 3 hours until ignition! #QM2 #SLSFiredUp https://t.co/WxJPDwTS2v
RT @OrbitalATK: The sun is starting to rise over the @NASA_SLS booster. Less than 3 hours until ignition! #QM2 #SLSFiredUp https://t.co/WxJPDwTS2v